188,810 results, page 78

1. ### math

A parallelogram has an area of 8x^2 - 2x -45. The height of the parallelogram is 4x + 9. I know the formula for a parallelogram is A=bh. Please work and explain how I get the length of the base of the parallelogram. Thanks
2. ### math

solve and check your answer. Please check this for me to see if I have the right answer. __2__ = __3__ 1-x 1+x x= 1/5

A biased coin is tossed 5 times where p(t) = .6. determine the probability that if you have 2 tails, you have 3 tails.
4. ### Math

Could someone please help me write an equation of the line containing the given point and parallel to the given line. (6,-9)4x-5y=8 Y=?

ABC is an isosceles triangle. If AB =AC =16, BC=8. D is the midpoint of side AC , and G is the centroid of triangle ABC , find BD .
6. ### math

write the pair of the fractions as a pair of fractions with a common denominator : a.) 2/4 and 7/8. b.) 3/10 and 1/2. my answer for the a.) is 16/32-28/32. for b.) is 6/20-10/20 please let me know is my answers is right or not
7. ### math

I need help on how to use a common denominator to write an equivalent fraction for each fraction?number 1 is 1/2,1/3 and number 2 is 7/8,3/10 please help
8. ### math-urgent

Sample space ={1,2,3,4,5} p(1)=0.1, p(2)=0.2 and p(3)=p(4)=0.05. Assume that A={1,3,5} and B={2,3,4}. Find p(5). Find p(A^c). I need help with this question. It is a probability question. please help.
9. ### Math 2

Two friend share1/2 of a pineapple equally. What fraction of a whole pineapple does each friend get? Please answer
10. ### Math

How do you solve 2y-5x=10 using the dual intercept method? I have to solve for X int and y int on a graph. Please help
11. ### math

(please solve step by step) solving equation (6x+2)/4 + (2x²-1)/(2x²+2) = (10x-1)/4x we got roots as

Which of these numbers can be classified as both real and irrational? a. 5.85 b. 63.4 c. square root 21 d. square root 36 Is the answer D?

Which of these numbers can be classified as both real and irrational? a. 5.85 b. 63.4 c. square root 21 d. square root 36 Is the answer D?

17. ### Math

9 friends share 12 pounds of pecans equals how many pounds of pecans does each friend get? Please answer soon! :-) :-( :-(

C/4-5=4 (c over 4) Please explain how to do this, its a written answer questen and I have no idea how to do it at all..
19. ### MATH HELP ASAP PLEASE!!!!!

the formula of a volume of a cube is v = s3. find the volume of a cube with a side length of 3/4 inches.
20. ### Math

A biology class has 12 boys and 18 girls .what fraction of the class are boys? Solution. 12/30=2/5 Please tell me this correct or not.
21. ### Math

The point (2, 3) is on the graph of y f(x). Determine the corresponding coordinates of this point on the graph of y= 2(f(2(x + 5) 4. Please include a full solution! A: (1,3),(1,6), (1,-6), (-4,-6), (-4,-10)
22. ### Math help me please

The temperature started at 35°F. If the temperature went down 4°F and then up 2°F, whats is the temperature difference relative to the high temperature? A) -2°F*** B) -1°F C) 1°F D) 2°F

X is greater than or equal to 3 I'm pretty sure that its D, but i'm not sure 0=open dot @=closed dot A) @-------> 3 5 B) <-------------0 -5 0 3 C) <-------------@ -5 0 3 D) 0-------> 3 5

"Y912f", please give the follow note to your parents. Dear Parents of Y912f, Your daughter has been receiving help from Jiskha for quite some time. Our task on this site is to "help" students learn, not do their work for them. It has become obvious that "Y" needs additional ...
25. ### Math

This year was first year of online school, and it was the WORST! (I go to connections and I would never advise it to anyone!) Anyways the math FSA for 6th grade is coming up, and my school did not do a good job teaching me, I hardly feel like a learned ANYTHING! And when I ...
26. ### Language Arts

Which of the sentences below using direct address is punctuated correctly? (1 point) Please come with me, Sarah, and Tom, to pick Mom’s birthday present. Please come with me, Sarah and Tom to pick Mom’s birthday present. Please come with me, Sarah, and Tom to pick Mom’s ...

Posted by Megan on Tuesday, October 12, 2010 at 3:44pm. I have a question if someone could help, please explain it. Given b = -1 and h = -1, what is the equation of the graph if the parent function is y = sqrt (x) Answers: a.y = sqrt(x-1) b.y = sqrt (-x+1) c.y = - sqrt (-x-1) ...
28. ### math

A, B, C, and D are points on a line, and the lengths of the line segments are: AB = 12, BC = 4, CD = 7, and DA = 15. Which of the following is a possible order for the points? A.A,B,C,D B. A,C,D,B C. A,D,C,B D. A,C,B,D•Math - Steve, Tuesday, July 22, 2014 at 7:36pm ACBD •...

The Candle Shop -Annual Inventory of candles. _______-________________________________ Jan 1 Beg Inventory 5,000 units @\$0.89 ---------------------------------------- Feb 15 Purchase 10,000 units @ \$0.69 ________________________________________ April purchase 2,000 units @ \$1....
30. ### physics

A 34 g glass thermometer reads 21.6°C before it is placed in 135 mL of water. When the water and thermometer come to equilibrium, the thermometer reads 38.7°C. What was the original temperature of the water? I need help on this please could someone please help out.Thank you...
31. ### physics

A 34 g glass thermometer reads 21.6°C before it is placed in 135 mL of water. When the water and thermometer come to equilibrium, the thermometer reads 38.7°C. What was the original temperature of the water? I need help on this please could someone please help out.Thank you...
32. ### Math

I need help solving this math problem, please: Problem: Angela's math test had 100 multiple-choice questions. Each correct answer was worth 1 point, each incorrect answer was worth -2 points, and skipped questions were worth 0 points. Angela answered an even number of ...
33. ### math help

I need help solving this math problem, please: Problem: Angela's math test had 100 multiple-choice questions. Each correct answer was worth 1 point, each incorrect answer was worth -2 points, and skipped questions were worth 0 points. Angela answered an even number of ...
34. ### statistics

Lilly collects data on a sample of 40 high school students to evaluate whether the proportion of female high school students who take advanced math courses in high school varies depending upon whether they have been raised primarily by their father or by both their mother and ...
35. ### math

Please people i need your help whoever knows# Mrs Ally went to the market with sh.10,000 to buy the following items; 5 kg of rice @ sh. 600, 2 kg of meat @ sh. 2000, 2 heaps of onions @ sh. 150, 2 kg of sardines @ sh.700 and bus fare sh. 300 @ journey. How much change was she ...
36. ### math

Please people i need your help whoever knows# Mrs Ally went to the market with sh.10,000 to buy the following items; 5 kg of rice @ sh. 600, 2 kg of meat @ sh. 2000, 2 heaps of onions @ sh. 150, 2 kg of sardines @ sh.700 and bus fare sh. 300 @ journey. How much change was she ...
37. ### Chemistry - pH

Calculate the pH of each of the following solutions: a) .35 M hydrochloric acid, HCl b) .35 M acetic acid, HC2H3O2 c) .35 M sodium hydroxide, NaOH Can someone please explain to me how to calculate the pH in a way that is easy to understand? I am confused. Could you please do ...
38. ### Vectors

Could you please help me solve this question: Solve this system of equations using elementary operations. 1. x/3 + y/4 + z/5 =14 2. x/4 + y/5 + z/3 =-21 3. x/5 + y/3 + z/4 =7 So far, I have multiplied all three equations by 60, to turn them into whole numbers. Then everytime I...
39. ### Engineering Kinematic

The particle travels along the path defined by the parabola y=0.5(x^2). If the component of velocity along the x-axis is v=5t [m/s], determine the particle's distance from the origin and the magnitude of its acceleration when t=1s. The initial condition is t=0, x=0 and y=0. ...
40. ### art

please is any one can hel me to answer this question as soon as possible thanks a lot. question in the subject marketing. 1.what distribution decisions would a new firm RENTS VANS to small business, seasonal business have to make?
42. ### Science

Can someone please help me please thank you. Climate change is an environmental issue in the news almost daily, and air pollution impacts us on a global level. What are the implications of global warming? Do you think the efforts to improve air quality are worth the economic ...

there's this a level question in a ten-year series book in 2008, the question asks what is the sequence in which it occurs: 1. polyadenylation 2. removal of introns 3. splicing exons 4. capping And the options given are: a) 1,3,2,4 b) 2,4,1,3 c) 3,1,4,2 d) 4,2,3,1 I've looked ...
44. ### Spanish-Please check my work

Could someone please check this for me. I had to rewrite the following sentence using a direct object pronoun in two different ways. I wrote: Nosotros queremos leerlos. Los hosotros queremos leer. Thank you for checking

Calculate the pH of an aqueous solution of 0.15 M potassium carbonate. I know that pH = -log(H30+) but I am not sure how to start this problem. Chemistry(Please help) - DrBob222, Saturday, April 14, 2012 at 11:09pm Hydrolyze the CO3^2-. CO3^- + HOH ==> HCO3^- + OH^- Do an ...
46. ### Probability

If X is a normal random variable with mean 11, and if the probability that X is less than 12.10 is .72 , then what is the standard deviation of X? Select one: a. 3.00 b. 6.25 c. 2.50 d. 1.25 Please note that the answer for the above is stated as c.2.50. However, my answer ...

I have a presentation due tomorrow on a connection that I made with the Anne Frank Remembered novel but I cant think of an item that I can connect to the novel.. I need help. It has to be one paragraph about the connection and it can be a song,poem,or object. Please help me !

A boat costs \$92,000 and depreciates in value by 15% per year. How much will the boat be worth after 10 years? 18,112.45 78,200 18,941.98 69,000 Is the answer the first one? Could somebody write down the steps for me please? Thanks
49. ### Algebra 2

Can somebody please give me a short explanation (like, a very simple sentence) on how exponents and algorithms are related? I know what they are (for example:) Exponents are the inverse of logarithms and vice versa. 6^2 = 36 Log6(36) = 2 But can somebody please help me explain...
50. ### Math

6. Vangie had 0.75 ream of bond paper. She used 0.25 of it in her project. What part of the ream of paper did she use? Please answer this question.\
51. ### Math

Please help!!! 1. Simplify...w+3/4w divided by w-3/2w to divide one fraction by another, keep the first fraction as is, then multiply by the reciprocal (flip) of the second one. so... (w+3)/(4w) ÷ (w-3)/(2w) = (w+3)/(4w) x (2w)/(w-3) = (w+3)/[2(w-3)] Thank you!!!
52. ### Math

Please check my answer thanks :) When repaing an installment loan of \$3,500 with 20 equal monthly payments of \$196 each , the apr of the loan is my answer is 13.5 %
53. ### Math - Inverse Functions

Find the inverses of the following functions. y = 3(x - 1)^2, x >= 1 Work: x = 3(y - 1)^2 x = 3(y - 1)(y - 1) x = 3(y^2 - y - y + 1) x = 3y^2 - 6y + 3 And now what do I do!? Please explain and show me how to solve this inverse function! ... Thank you
54. ### math

{y-2}/(a^2-5a+6)=(a+1)/(a-3)-(a+2)/(a-2) How can I solve for y in terms of the other variables??? I tried many times, but I just get y=6,can't express y in terms of variables. Can anyone please correct me or teach me?THANKS A LOT!
55. ### Math

Xavier and Yolanda have a combined aged of 24. 6 years ago Xavier was 3x as old as Yolanda. Can you help with the equation and the working out please.
56. ### math

Is there a formula to sum the digits between two numbers? eg. 1 to 20 = 1+2+3+4+5+6+7+8+9+1+0+1+1+1+2+1+3+1+4+1+5+1+6+1+7+1+8+1+9+2+0 = ?? I am looking for the numbers 1 to 2008 so I really need a formula! Please help, thank you. Jane
57. ### math

how would you determine a conic represented by the polar equation r=a*cos(x)+b*sin(x). then how would you convert the equation to rectangular form? please help
58. ### math

the question asks to integrate cos(t)/(5sin(t)+8)^2 the answer i got was xcos(t)/(5sin(t)+8)^2 i think the x is wrong but i am not sure what i am doing wrong...help please.

1) Use the cofunction identites to evaluate the expression without the aid of a calculator. cos^2 18 degrees + cos^2 72 degrees.
60. ### Math

Could someone please help me with this problem? I need to solve -5/2x greater than or equal to -7/4. Here is the answer that I got but I 'm sure that it is not correct. x greater than or equal to 35/8. Thanks.
61. ### Math

Please explain why a positive number minus a negative number equals positive and you add it together??? Makes no sense at all. ex 10-(-3)=13
62. ### Math 5th

i need help in a hurry!!!!!!! I need to know what the fractions-one half and so on until one fourth us equal to bye tomrrow!!!!!!!!!!! please help!! :)

Can you please check my answer? Selena received \$42 commission for selling a computer for \$1400. What percent is her commission? my answer: 3%
64. ### Math

which of the following sums is larger and by how much? round your answer to 4 decimal places if necessary 1. 7 over Sigma 15/4(pi/10)^n 2. 11 over Sigma 17/4(4/13)^n please help!

Find two positive fractions such that if we switch the denominators, the sum afterthe switch is 50 times the original sum.

Determine whether on not the following limit exists. If, so compute the limit. lim x->3 of sqrtx - 4 / x^3 +27 sqrt 3 - 4 / x^3 + 27 = sqrt 3 -4 / 54 Is this correct?

The radius of a niobium atom is 131 pm. How many niobium atoms would have to be laid side by side to span a distance of 1.4 mm?? I know that 10^9 is pm or is it -9??
68. ### Math

Lee has 35 dimes and quarters that total \$5.00. Solve the system of equations to find how many dimes and how many quarters he has. d+q=35 0.1d+0.25q=5 Please show your work thanks

How do you turn these equation into a standard form? this is the standard form: ax+by=c here are the following equations: 2x = y + 1/2 y - 2 = 1/4x + 1 3y + 3 = 6x - 15 Please help and explain. Thank you.
70. ### Math

Mr.Mike wants to leave the waitress a 12% tip. Estimate the tip if he should leave if the family's bill is \$32.46. Please show ALL WORK.......THANK YOU!!!!! :)

72. ### Math: Geometry

If 0 < y < 1 and 0 < x < 1, find the probability that y < x. Begin by sketching te graph, and then use the area method to find the probability. Please help me. I do not understand. Thank you in advance!
73. ### Math: Geometry

If 0 < y < 1 and 0 < x < 1, find the probability that y < x. Begin by sketching te graph, and then use the area method to find the probability. Please help me. I do not understand. Thank you in advance!
74. ### Math

Each fence section has a post at each end. How many posts are needed to build a fence with 10 sections? Is it 8, 11, 10 or 9 posts ?? Please explain to really want to understand this!!
75. ### Math/Statistics

Can anyone please help me explain confidence intervals. How does one tell/determine if a confidence interval is too wide? What indicates too wide? Thanks in advance!

Write an equation for the line that is parallel to the given line and passes through the given point. y = 5x + 10; (2, 14) A.y=1/5x +4 B.y=-1/5x-4 C.y=5x-68 D.y=5x+4 I think it might be D...not sure
77. ### Math

Matt puts 3 1/2 quarts of lemonade in the pitcher. He adds another 1/2 quarts. How many pints of lemonade does he have total? PLEASE SHOW WORK! :[
78. ### math HELP!

nobody has answered yet and this is the only question I need :( If angle A=30* and side b=4.0 km, how do I find side c? I know that this is a 30-60-90 triangle but I don't know how to find the hypotenuse. please help!
79. ### math help now please

If a figure is a rectangle ABCD and the measure of angle ABD is 35 degrees what is the measure of the angles ABD CBD and BDC

Can you find me a website how to do inequalities on line graphs on the less than and greater than inequalities. Ex: 2r-2<4 (A line goes under the sign "<")

I am having trouble with Input output for this problem, I can't figure out the function rule input x= output y= 2 1 3 0 4 -1 Please Help!
82. ### math

1)find the sum of the odd integers from 25 to 75 2)find the sum of the first 20 terms in the series 10+5+2.5+1.25... . please show the steps to solve the problem^_^
83. ### Math

Let Alpha and Beta be the zeros of the cubic polynomial x^3 + ax^2 + bx + c satisfying the relation Alpha * Beta = 0. Prove that : c^2 + ac + b + 1 = 0. Please work the complete solution.
84. ### Math

Let Alpha and Beta be the zeros of the cubic polynomial x^3 + ax^2 + bx + c satisfying the relation Alpha * Beta = 0. Prove that : c^2 + ac + b + 1 = 0. Please work the complete solution.
85. ### Math

Let Alpha and Beta be the zeros of the cubic polynomial x^3 + ax^2 + bx + c satisfying the relation Alpha * Beta -1 = 0. Prove that : c^2 + ac + b + 1 = 0. Please work the complete solution
86. ### math

I need the answers to the why did the banana go out with the prune worksheet. I already have the answer to the riddle, but I need the numeral answers please.

Point A lies in plane B. How many lines can be drawn perpendicular to plane B through point A? 1) one 2) two 3) zero 4) infinite
88. ### math

In a 365 day calendar year, there are ____ more odd-numbered days than even-numbered days. Please Explain
89. ### math 1

olivia ties 2.5 feet of ribbon onto a balloon. how many yards of ribbon does olivia need for 18 balloons? please anser thx
90. ### Math!!!

Sam buys a lamp during the sale. There was a discount of 20%. If the original price is \$4, what is the sale price? - Please put in proportion form!
91. ### math

When the population of a town rose from a million to a + x million, the per cent increase was a. x/a % b. 100a/x % c. 100x/x-a % d. x/a-x % e. 100x/a % please answer and explain
92. ### math

If unequal quantities are subtracted from equal quantities, the remainders are unequal in the opposite order. Since 25=25 and 5>3, then 20<22. If x=y and a>d, then x-a<y-d. Please show work and explain.
93. ### math

15. The sum of five unequal whole numbers is 90. The second largest of these five numbers can be at most A.19 B.41 C.43 D.89 please explain and show work.

The sales tax oon a \$350 computer is \$22.75. Find the saes tax rate. 24 red marbles is 40% of _____ marbles.

Abraham earns \$11.50 an hour. How many hours will Abraham have to work to earn \$483? Please Show Work!!!!
96. ### Math

A set of trading cards sells for \$12.00. After sales tax, it costs \$12.60. what is the sales tax rate? Do I divide to get this answer? Please help.